APA (7th ed.) Citation

HARDY & Wright. (1975). An introduction to the theory of numbers (4th edition.). Oxford University Press.

Chicago Style (17th ed.) Citation

HARDY and Wright. An Introduction to the Theory of Numbers. 4th edition. London: Oxford University Press, 1975.

MLA (8th ed.) Citation

HARDY and Wright. An Introduction to the Theory of Numbers. 4th edition. Oxford University Press, 1975.